package com.heima.article.service.impl;

import com.baomidou.mybatisplus.core.toolkit.Wrappers;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.heima.article.mapper.ApArticleConfigMapper;
import com.heima.article.mapper.ApArticleContentMapper;
import com.heima.article.mapper.ApArticleMapper;
import com.heima.article.service.ApArticleService;
import com.heima.article.service.ArticleFreemarkerService;
import com.heima.common.constants.ArticleConstants;
import com.heima.model.article.dtos.ArticleDto;
import com.heima.model.article.dtos.ArticleHomeDto;
import com.heima.model.article.pojos.ApArticle;
import com.heima.model.article.pojos.ApArticleConfig;
import com.heima.model.article.pojos.ApArticleContent;
import com.heima.model.common.dtos.ResponseResult;
import com.heima.model.common.enums.AppHttpCodeEnum;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang3.StringUtils;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.Date;
import java.util.List;

@Service
@Transactional
@Slf4j
public class ApArticleServiceImpl extends ServiceImpl<ApArticleMapper, ApArticle> implements ApArticleService {

    @Autowired
    private ApArticleMapper apArticleMapper;

    @Autowired
    private ApArticleConfigMapper apArticleConfigMapper;

    @Autowired
    private ApArticleContentMapper apArticleContentMapper;

    @Autowired
    private ArticleFreemarkerService articleFreemarkerService;

    private final short MAX_PAGE_SIZE = 50;

    /**
     *
     * @param dto
     * @param type type 1-加载更多；2-加载最新
     * @return
     */
    @Override
    public ResponseResult load(ArticleHomeDto dto, Short type) {
        // 1.校验参数
        // 1.1 分页参数的校验
        Integer size = dto.getSize();
        if(size == null || size == 0) {
            size = 10;
        }
        // 分页不超过50
        size = Math.min(size, MAX_PAGE_SIZE);
        dto.setSize(size);

        // 1.2 类型参数的校验
        if(!type.equals(ArticleConstants.LOADTYPE_LOAD_MORE) && !type.equals(ArticleConstants.LOADTYPE_LOAD_NEW)) {
            type = ArticleConstants.LOADTYPE_LOAD_MORE;
        }

        // 1.3 频道参数的校验
        if(StringUtils.isBlank(dto.getTag())) {
            dto.setTag(ArticleConstants.DEFAULT_TAG);
        }

        // 1.4 时间参数的校验
        if(dto.getMaxBehotTime() == null) {
            dto.setMaxBehotTime(new Date());
        }
        if(dto.getMinBehotTime() == null) {
            dto.setMinBehotTime(new Date());
        }

        List<ApArticle> apArticleList = apArticleMapper.loadArticleList(dto, type);
        return ResponseResult.okResult(apArticleList);
    }

    /**
     * 保存APP端相关文章
     * @param dto
     * @return
     */
    @Override
    public ResponseResult saveArticle(ArticleDto dto) {
        // 1.检查参数
        if (dto == null) {
            return ResponseResult.errorResult(AppHttpCodeEnum.PARAM_INVALID);
        }

        ApArticle article = new ApArticle();
        BeanUtils.copyProperties(dto, article);
        // 2.判断是否存在Id
        // 2.1 不存在Id：保存文章、文章配置、文章内容
        if (dto.getId() == null) {
            save(article);

            ApArticleConfig apArticleConfig = new ApArticleConfig(article.getId());
            apArticleConfigMapper.insert(apArticleConfig);

            ApArticleContent apArticleContent = new ApArticleContent();
            apArticleContent.setArticleId(article.getId());
            apArticleContent.setContent(dto.getContent());
            apArticleContentMapper.insert(apArticleContent);
        } else {
            // 2.2 存在Id，修改文章、文章内容
            updateById(article);

            ApArticleContent apArticleContent = apArticleContentMapper.selectOne(Wrappers.<ApArticleContent>lambdaQuery().eq(ApArticleContent::getArticleId, dto.getId()));
            apArticleContent.setContent(dto.getContent());
            apArticleContentMapper.updateById(apArticleContent);
        }

        // 异步调用：生成静态文件并上传到MinIO中
        articleFreemarkerService.buildArticleToMinIO(article, dto.getContent());

        // 3.结果返回，返回文章的Id
        return ResponseResult.okResult(article.getId());
    }
}
